A magazine article from All The Year Round presenting a biography of Samuel Crompton, inventor of the spinning mule, set in Bolton, Lancashire. It describes his stern upbringing, the mechanical inventions that unbalanced spinning and weaving (Kay's fly-shuttle and drop-box, Hargreaves's jenny, Arkwright's frame), and Crompton's years of experiments on a muslin wheel. It follows his loss of control over the invention, the meagre parliamentary grant, the rise and fall of muslin weavers' wages, and his death in obscurity.